An optical compensation sheet is provided and includes: a cellulose acylate film having optical anisotropy and meeting all of requirements represented by the following expressions to ; and an optically anisotropic layer having a slow axis orthogonal to a slow axis of the cellulose acylate film. The connector has a male pin with a slot along most of its length and an adjustment mechanism that is used to vary the width of the slot. If it is impossible to determine the result, the next cross-sectional image to be processed is determined, and the cross-sectional image is sent from the image storage device to the image processing device. The third dopant region is of a same majority charge carrier type as the second dopant region but has a greater concentration of free charge carriers than the second dopant region.